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Squilliam on 19 April 2009
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crumas2 said:
Squilliam said:
crumas2 said:

Hmmm... this is usually true for a very short period of time, but I'm not familiar with going to a reduced process (more chips per die) as producing anything but higher yields very quickly.  Please illuminate me.  

 

Italised the important word, 'initially'.

 

Understood.  In your estimation, what would the cross-over time period from lower-to-higher be?  I'm assuming 30-60 days max once full production is underway, but I've been wrong before...

 

Im not at home, otherwise I would provide you with some example defects vs time graphs. (Holiday), so from what I can rememember the defect rates can start out extremely high and dip quickly with some point in the middle tipping the balance towards mass production at the new process node. (It depends whether you include the sampling time-frame it not I guess)

 



Tease.